engineering recuitment BHEL Engineer Trainee Mock Test 2025 Electrician and Wireman Electronic Devices and Circuits Basic Electronics

ସିଗନାଲ୍ ର ପରିମାଣ ବୃଦ୍ଧି କରିବାକୁ କେଉଁ ଯନ୍ତ୍ର ବ୍ୟବହୃତ ହୁଏ?

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ରେକ୍ଟିଫାୟର୍
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ଆଟେନୁଏଟର
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ଆମ୍ପ୍ଲିଫାୟର୍
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ଇନଭର୍ଟର
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